Android Open Source - rpg Nav Path

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License

The source code is released under:

Apache License

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Java Source Code

package org.aschyiel.rpg.graph;
//  ww w  .  j a  v a2s.  c  o  m
import java.util.List;

import org.aschyiel.rpg.IGameObject; 
import org.aschyiel.rpg.graph.Navigator.NavCallback;

/**
* A simple way of keeping track of both the game-object,
* and the current step in the navigation steps.
*/
public class NavPath
{
  protected final IGameObject unit;

  protected final List<Step> steps;

  /**
   * The current step index.
   */
  private int idx = 0;

  protected NavCallback cb;

  public NavPath( final IGameObject unit, final List<Step> steps )
  {
    this.unit  = unit;
    this.steps = steps;
  }
  
  protected void incrementStep()
  {
    idx++;
  }

  /**
  * Returns true if we're done with all of our steps.
  */
  protected boolean isAtDestination()
  {
    return idx > steps.size() - 1;
  }

  protected Step getCurrentStep()
  {
    return ( idx < steps.size() )?
        steps.get( idx ) : null;
  }

  /**
  * A mechanic for re-routing;
  * Essentially tacks-on new steps to our existing steps.
  */
  protected void swapIn( final List<Step> detour )
  {
    idx = 0;
    steps.clear();
    steps.addAll( detour );
  }
}

Java Source Code List